Tramming device



G. E. BLAKE.

TRAMMING DEVICE.

APPLICATION FILED NOV-30,1918.

Patented Oct. 28, 1919.

GEORGE, E. BLAKE, 0F LANCASTER, OHIOL TRAMMING DEVICE.

Specification of Letters Patent.

Patented Oct. 28', 1919.

Application filed November 30, 1918.. Serial No. 264,823..

To all whom it may concern.-

Be it known that I, GEORGE E. BLAKE, a citizen of the UnitedStates,.residi'ng at Lancaster, in the county of Fairfield, State ofOhio, have invented certain new and useful Improvements in TrammingDevices and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in millingmachines and particularly to tramming devices therefor.

One object of the present invention is to provide a novel and improveddevice which will readily indicate to the miller when the rolls are outof tram.

Another object is to provide a novel and improved device of thischaracter which can be easily and quickly operated while the mill isrunning, to place the rolls in tram.

Other objects and advantages will be apparent from the followingdescription when taken in connection with the accompanying drawing.

On the drawing:

Figure 1 is a side elevation of the invention, portions of the grindingrolls and supportsbeing shown in connection therewith.

Fig. 2 is a top plan view of the same.

Referring particularly to the accompanying drawing, 10 and 11 representthe upper portions of the bearings of the grinding rolls 12 and 13, and14: and 1 5 the lower portions secured together by the screws 16. Thesebrackets are vertically adjustable by means of tram screws commonlyemployed for this purpose, but are not shown herein. Disposed on theupper side of the bearing 10 is a vertical member 17 having a verticalrectangular opening 18 therethrough for the reception of the clampingscrew 19. Formed on the upper end of the member 17, and extendinghorizontally in a direction toward the other roll 13, is an arm 20having an opening 21 formed transversely through the outer end thereof.The elements 17, 19, and 20 thus form a carrier for the index finger tobe referred to later. A similar member 22 is disposed on the upper sideof the bearing 11 and has the elongated opening 23 formed verticallytherethrough for the reception of the clamping screw 24:. It will benoted that these screws 19 and 24 are screwed into the upperporelongated slot 2 6 therethrough. These elements form the carrier forthe. scale-to be,

.referred to later. An index finger 27 has one end pivotally supportedby a screw or bolt 28 disposed through the end of the arm 20. A bolt 29is disposed through the index finger 27 and through the slot 26, theouter end of the index finger 27 being disposed to traverse the scale 30formed on the member 22.

When the bearing of the roll 13 drops below its normal or trammingposition, the index finger 27 will be moved downwardly by the bolt 29 sothat the outer end of the index finger. will be disposed over one of thelower marks of the scale. The miller then adjusts the tramming screw orscrews to raise the roll or lower the other roll so that the tramming ofthe rolls will be proper.

Thus the miller can readily and quickly see when the rolls are out oftram, and know instantly which of the tram screws to adjust to bring therolls back into tram.

By means of the clamping screws the miller can adjust the members 17 and22 on the bearings 10 and 11, to true up the indicator. The slots of themembers 17 and 22 readily permit them to be moved around the peripheralfaces of the bearings.

What is claimed is:

1. The combination with the bearings of a pair of grinding rolls of amilling machine, of a pair of members adjustably mounted on the bearingsand movable toward and away from each other, a scale carried by one ofthe members, and an index finger movably connected to one of the membersand operatively connected to the other member whereby said index fingerwill be moved over the face of the scale to indicate the positions ofthe bearings and rolls car- 3. A tramming attachment for grinding millrolls comprising an index finger having means for pivotally connectingit with one member to be trammed, and a scale member for connection withanother member to be trammed With its 'scale in cooperative relation tothe index finger, the scale member also having pivotal connection Withthe index finger and the latter being movable over the scale under theinfluence of correlative movement of the scale member and the connectingmeans for the index finger.

4:. A tramming attachment for grinding mill rolls comprising a carrierfor attachment to one member to be trammed, a scale carrier forattachment to another member to be trammed, and an index fingerpivotally supported on the first carrier and pivotally engaged with thesecond carrier for traversing the said scale upon movement of one of themembers to be trammed.

In testimony whereof I affix my signature, in the presence of twoWitnesses.

GEORGE E. BLAKE.

Witnesses HARRY WEAvER, C. D. MCCOY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

